The Ubiquiti UNAS Pro 4 Bays Rackmount NAS solution built for high-speed storage deployments, featuring four 2.5/3.5-inch drive bays alongside dual M.2 NVMe slots for SSD caching or accelerated storage performance. With dual 10 Gigabit SFP+ networking ports, RAID 5/6/10 support, cloud backup integration, snapshots, and secure file sharing, it delivers reliable storage for business, creative, and advanced home network environments.
Features
UNAS Pro 4
Note: Rack not included. Product requires a 4-post rack, or a centre-mount bracket or cantilever shelf on 2-post racks for optimal support.
Note: Rack not included. With rack ears only, the supported rack depth is 450 mm, including space for the power cord.
Deployment
Build Features
Front View
Back View
*Require UniFi Power Backup.
Dimensions
Specifications
General Data
| Model Number |
UNAS-PRO-4 |
| Dimensions |
442.4 x 400 x 43.7 mm (17.4 x 15.7 x 1.7") |
| Storage Capacity |
(4) 2.5/3.5" drive bays
(2) M.2 NVMe bays |
| Networking Interface |
(2) 10G SFP+ (10G only)
(1) GbE RJ45 (1G/100M/10M) |
| Power Redundancy |
Yes (DC Power Backup with UniFi RPS) |
| Form Factor |
Rack mount (1U) |
Hardware
| Hard Drive Capacity |
(4) 2.5/3.5" HDD / SSD support
(2) M.2 NVMe SSD support |
| Max. Power Budget for Drives |
125W |
| Max. Power Consumption |
150W |
| Power Method |
(1) Universal AC input, 100–240V AC, 3A Max., 50/60 Hz
(1) USP-RPS DC input, 11.5V DC, 13.91A |
| Power Supply |
AC/DC, internal, 150W |
| Processor |
Quad-Core ARM® Cortex®-A57 at 2.0 GHz |
| Memory |
8 GB |
| Management |
Ethernet |
| RF Interface |
Bluetooth 4.1 |
| Weight |
6.7 kg (14.8 lb) |
| Enclosure Material |
SGCC steel |
| Mount Material |
SGCC steel |
| Supported Rack Depth |
The rails support 600 mm (23.6") four-post racks with square holes (9.5 x 9.5 mm)
Posts depths ranging from 600–1066 mm (23.6–42") |
| LEDs |
Ethernet: Yes
SFP+: Yes
HDD: Yes
RPS: Yes
System: Yes |
| Ambient Operating Temperature |
-5 to 40° C (23 to 104° F) |
| Ambient Operating Humidity |
5 to 95% noncondensing |
| NDAA Compliant |
Yes |
| Certifications |
FCC, CE, IC |
Software
| Supported File Protocols |
NFS: Yes
SMB: Yes |
Supported Features on unifi.ui.com
| RAID Type |
RAID 5
RAID 6
RAID 10 |
| RAID Group |
Single |
| Personal Drive & Shared Drive |
Yes ("Dedicated storage spaces for private use and shared access within the NAS) |
| SSD Cache |
Yes |
| Max. NVMe SSD Capacity Supported |
4 TiB |
| File Encryption |
Yes |
| Backup to Remote UNAS |
Yes |
| Backup to CIFS/SMB Server |
Yes |
| Backup to Cloud Services (Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, Wasabi) |
Yes |
| Snapshots |
Yes (Create instant data versions for quick and reliable backup) |
| Share Links |
Yes (Share NAS files or folders through secure, time-limited URLs) |
| Time Machine Backup |
Yes (Automatic macOS backups to UniFi NAS) |
| Client App Support |
Yes (Integrate NAS with UniFi Identity for centralised access control) |
| User Groups |
Yes (Apply access rules to multiple users at once) |
Backed by a 1 year Ubiquiti warranty.
